Apparatus for producing additional draft in drawing frames



Mlch 28, l939- l wElNBl-:RGER A 2,152,295

APPARATUS FOR PRODUCING ADDITIONAL VDRAFT 1N DRAWING FRAMES Filed Oct.25, 1957 2 Sheets-Sheet l March 28, 1939. J. wElNBERGER ,APPARATUS FORPRODUCING ADDITIONAL DRAFT IN DRAWING FRAMES Filed oci. 25, 1937- 2sheets-sheet 2 Patented Mar. 28, 1939 PATENT OFFICE APPARATUS FonPRoDUoING ADDITIONAL DRAFT 1N DRAWING FRAMES Jan Weinberger, Chrastava,Czechoslovakia, as signor of twenty-five per cent to St. George TextileCorporation, New York, N.1Y., a corporation of New York ApplicationOctober 25, 1937, Serial No. 170,912 In Yugoslavia October 27, 1936 4Claims.

This invention concerns an apparatus for producing additional draft indrawing frames and consists in thearrangement that the slivers leavingthe drawing frame on their way to the known rotary cans are subjected toan additional draft in order to exclude any harmful effects on thesliver arising during its being deposited in the rotary cans, and alsothe better to prepare such sliver for treatment in the subsequent frameas well as overcoming atmospheric and static contitions.

The foregoing problem set up as the basis of this invention has beensolved constructively in the manner that the sliver delivered from theknown drawing frame is carried through a special drawing iield which isformed between the pair of delivery rollers of the drawing frame and thepair of drawing rollers lying within reach of the upper plate of thesliver can. By an appropriate selection of the surface speed of the pairof drawing rollers this drawing eld may -be adjusted in agreement withthe material worked for various effects of the draft.

'I'he drawings illustrate an apparatus constructed according to theinvention, partly broken away and shown in section. Figure l is a topplan view of the apparatus; Figure 2 is a vertical cross-sectional Viewtaken on line 2 2 of Fig. 1; Figure 3 is a vertical cross-sectional viewtaken on line 3 3 of Figure 1; and Figure 4 is a horizontal sectionalview taken online 4 4 of Fig. 3.

The upper rotary plate I2, provided withthe inlet and outlet channelIll, Il, respectively, for

-l' the sliver I, is rotatably placed in the known manner above therotary can C and revolved by the toothed ring I3 which is engaged by aspur wheel not shown in the drawings.

Into the upper wall of the stationary case III, surrounding the upperrotary plate I2 is to be set the toothed ring I5 that is retainedtherein by the screws I6. In the lower side of this case wall there iscut the groove Il having a common axis with the upper plate.

The toothed ring I5 is engaged by the spur wheel I8 fixed on the shaftIsa which carries at its upper end the loose ring I9 guided in thegroove Il. The shaft IBa carrying the spur wheel I8 is lodged rotatablyin the bearing 29, rigid with the upper rotary plate I2 and carries atoothed bevel wheel 2l engaging the toothed bevel wheel 22. The shaftI8a is supported at its lower end in the bearing 20a.

The shaft 22a supporting the spur wheel 22 is lodged rotatably in theblocks 23 connected with the upperV rotary plate I2 vand carries onedrawing roller 24v and at its end' the spur wheel 25. This wheel 25engages the spur wheel 26 seated firmly on its axle 26a which is, in thecut-outs of the block 23, projected to the influence o-f the springs 21.On the axis of the spur wheel 26 sits the second drawing roller 23. Thedrawing rollers 24, 28, are cleaned by the cleaning pads 29 which arespringwise pressed against them.

As will be seen, itis possible, by an appropriate change of the gearratio between the toothed ring I5 and the spur wheel I8, to change thesurface speed of the drawing rollers and thus to produce the everneedful and desirable additional draft between the delivery rollers andthe drawing rollers 24, 28.

While there is herein shown and described the preferred embodiment ofthe invention, it is nevertheless to be understood that minor changesmay be made therein without departing from the spirit and scope of theinvention as'claimed.

I claim:Y

1. In a machine of the class described, means for feeding the sliver toa can including a rotary plate, an inclined sliver channel rising fromthe rotary plate, a stationary case above the plate and into which theupper end of the channel rotatably extends, said plate being rotatableon a vertical axis extending centrally through the upper end of theinclined channel whereby a sliver passing through the channel remains atall times spaced from the wall thereof, a pair of sliver draftingrollers extending across the channel adjacent the lower end thereof forlengthening the sliver and holding the same spaced from the channelwalls, and a gear drive for the rollers cooperatively carried by therotary plate and stationary case and rendered operable upon rotation ofthe p-late. Y

2. In a machine of the class described, means for feeding a sliver to acan including a rotary plate, an inclined sliver channel rising from therotary plate, a stationary case above the plate and into which the upperend of the channel rotatably extends, said plate being rotatable on avertical axis extending centrally through the upper end of Athe inclinedchannel whereby a sliver passing through the channel remains at alltimes spaced from the walls thereof, a pair of sliver drafting rollersextending across the channel adjacent the lower end thereof forlengthening the sliver and holding the same spaced from the channelwalls and means for operating the drafting rollers rendered operableupon rotation of the plate.

3. In a machine of the class described, means for feeding a sliver to acan including a rotary plate, an inclined sliver channel rising from therotary plate, a stationary case above theiplate and into which the upperend of the channel rotatably extends, said plate being rotatable on avertical axis extending centrally through the upper end of the inclinedchannel whereby a sliver passing through the channel remains at alltimes spaced from the walls thereof, a pair of sliver drafting rollersextending across the channel adjacent the lower end thereofforlengthening the sliver and holding the same spaced from the channelwalls, a gear.` train drive for the drafting rollers cooperativelycarried by the rotary plate and stationary case and rendered operableupon rotation of the plate, including a ring gear on the stationary caseand a pinion of the 4gear train carried by the rotary plate forplanetarily moving around the ring gear.

4. In a machine of the class described, means for feeding a sliver to acan including a rotary plate, an inclined sliver channel rising from therotary plate, a stationary case above the plate and into which the upperend of the channel rotatably extends, said plate being rotatable on avertical axis extending centrally through the upper 'end of theinclinedchannelwhereby a sliver passing through the channel remains atall times spaced from the walls thereof, a pair of sliver ldraftingrollers extending across the channel adjacent the lower end thereof forlengthening the sliver and holding the same spaced from the channelwalls, a gear drive for the drafting rollers cooperatively carried bythe rotary plate and stationary case and rendered operable upon rotationof th-e plate, including a ring gear on the stationary case, a verticalshaft on the rotary plate having a journaledbearing at its lower end inthe plate, said stationary case having a downwardly opening annulargroove into which the upper end of the shaft extends for guided movementtherein, a gear train between the shaft and drafting rollers and apinion on the shaft engagedwith the ring gear.

JAN WEINBERGER.

